JP2002274162A - Structure of drain hose in air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain saving of a space while reducing a transmitted noise from an engine room, in a structure of a drain hose in an air conditioner for a vehicle. SOLUTION: A hole 7 and a slot 8 are provided in a dash silencer 5 fixed to a car room side of a dash panel. A grommet 11 and a seal plate 12 are integrally molded in a drain hose 10 connected to a cooling unit arranged in a car room. The drain hose 10 is inserted in the dash panel 3 and extended to a side of an engine room, the grommet 11 is fixedly fitted to a grommet mounting hole 6, the seal plate 12 is made adhesion to the dash silencer 5, and the hole 7 and the slot 8 are closed. By storing the grommet 11 and the drain hose 10 to the hole 7 and the slot 8, saving of a space can be attained, and by closing the hole 7 and the slot 8 by the seal plate 12, a transmitted noise from the engine room can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain hose structure of a vehicle air conditioner for discharging condensed water from a cooling unit disposed in a vehicle cabin.

[0002]

2. Description of the Related Art Generally, in an automobile air conditioner, for example, as shown in FIG. 7, an evaporator (not shown) is used.
Is disposed in the vehicle interior, and a drain hose 2 connected to the cooling unit 1 is inserted through a dash panel 3 through a grommet 4 to be opened to the outside in an engine rule. As a result, the condensed water generated by the evaporator is discharged to the drain hose 2
Through the engine room to the outside.

A dash silencer 5 is attached to the dash panel 3 on the passenger compartment side to reduce noise transmitted from the engine compartment to the passenger compartment.

[0004]

The drain hose structure of the conventional air conditioner has the following problems. Grommet on grommet mounting hole 6 on dash panel 3
In order to mount 4, the dash silencer 5 is provided with a hole 7 large enough to allow the grommet 4 to be inserted. This hole
The noise in the engine room penetrates into the vehicle compartment through 7, thereby reducing the quietness of the vehicle compartment. Also, as shown in FIG. 7, the grommet mounting hole 6 of the dash panel 3 is
When the cooling unit 1 is separated from the cooling unit 1, a space S for arranging the drain hose 2 along the dash panel 3 is required in the vehicle cabin, which restricts the layout of the cooling unit 1.

The present invention has been made in view of the above points, and provides a drain hose structure of a vehicle air conditioner capable of reducing noise transmitted from an engine room and achieving space saving. The purpose is to.

[0006]

According to a first aspect of the present invention, a drain hose is connected to a cooling unit disposed in a vehicle cabin, and the drain hose is connected to a dash panel via a grommet. In the drain hose structure of the air conditioner for a vehicle, which is inserted and opened on the engine room side, a long hole for accommodating the drain hose and the grommet are provided in a dash silencer attached to the vehicle room side of the dash panel. A hole to accommodate the
The drain hose is provided integrally with a seal plate that covers the hole and the long hole, and the drain hose is routed along the long hole, and the seal plate is brought into close contact with the dash silencer to form the hole and the long hole. It is characterized in that it is closed. With this configuration, the drain hose and the grommet are accommodated in the long holes and the holes of the dash silencer, so that they do not protrude into the vehicle interior, and the holes and the long holes are closed by the seal plate. Therefore, noise transmitted through them is cut off. Claim
The drain hose structure of the vehicle air conditioner according to the second aspect of the invention,
The configuration according to claim 1, wherein a drain port for connecting the drain hose of the cooling unit is directed toward an end of the elongated hole.
With this configuration, the cooling unit can be arranged near the dash panel by connecting the drain port to the end of the drain hose protruding from the long hole. The drain hose structure of a vehicle air conditioner according to the invention of claim 3 is the drain hose structure according to claim 1 or 2, wherein the drain hose has a connection portion connected to a drain port, and a curved pipe portion from the connection portion. A straight pipe portion extending downward along the dash panel through the dash panel, and a penetrating portion extending from the straight pipe portion to the engine room side via a curved pipe portion and penetrating the dash panel through the grommet. The seal plate is fixed to the straight pipe portion. With this configuration, the seal plate can be stably supported by the straight pipe portion. Also,
The drain hose structure of the vehicle air conditioner according to the invention of claim 4, wherein the structure of any one of claims 1 to 3,
The grommet and the seal plate are formed integrally with the drain hose. With this configuration, the number of steps for assembling the drain hose, grommet and seal plate can be reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Note that the same parts as those in the conventional example shown in FIG. As shown in FIGS. 1 to 3, in the drain hose structure of the vehicle air conditioner of the present embodiment, the dash silencer 5 attached to the vehicle interior side of the dash panel 3 has a grommet mounting hole 6 of the dash panel 3. A long hole 8 communicating with a hole 7 provided at a position matching the hole extends upward from the hole 7.

[0008] The cooling unit 1 is disposed above the grommet mounting hole 6 in the vicinity of the dash panel 3 in the vehicle interior, and a drain pipe 9 (drain port) provided at a lower portion of the cooling unit 1 is provided with a dash silencer 5. It is directed toward the tip of the elongated hole 8. Drain pipe 9 has
One end of the drain hose 10 is connected, and the drain hose
10 is inserted into the long hole 8 of the dash silencer 5, bent downward to extend to the hole 7, and furthermore, the dash panel 3
The grommet is inserted and fitted into the grommet mounting hole 6 through the grommet 11, is extended into the engine room, and its tip is opened vertically downward.

As shown in FIG. 4 and FIG.
A connecting portion 10A protruding from the end of the elongated hole 8 and connected to the drain pipe 9; a straight pipe portion 10C extending downward along the dash panel 3 from the connecting portion 10A via the curved pipe portion 10B; Pipe
A straight pipe section 10D slightly bent from 10C and a grommet 1 extending from the straight pipe section 10D to the engine room side through a bent pipe section 10E.
1 is a molded hose having a penetrating portion 10F that penetrates the dash panel 3 through 1 and an opening portion 10H that extends downward from the penetrating portion 10F through the curved pipe portion 10G and opens, and the penetrating portion 10F has an elastic body. The grommet 11 consisting of
A seal plate 12 made of a plate-like elastic body is integrally formed on 10C and 10D. Grommet 11 has a dash panel
An outer peripheral groove 13 that fits into the edge of the third grommet mounting hole 6 is formed.

[0010] The seal plate 12 is a dash silencer.
It consists of a circular part covering the hole 7 of 5 and a rectangular part covering the long hole 8 and is bent along the surface shape of the dash silencer 5 (bent parts are omitted in FIGS. 1 and 2). ,
When the grommet 11 is fitted into the grommet mounting hole 6 and the drain hose 10 is fixed to the dash panel 3, the grommet 11 comes into close contact with the surface of the dash silencer 5 and closes the hole 7 and the elongated hole 8. The longitudinal dimension of the rectangular portion of the seal plate 12 is shorter than one end of the drain hose 10, and the end of the drain hose 10 at one end is
Projecting from the end.

Next, the operation of the embodiment constructed as described above will be described. Insert the drain hose 10 connected in advance to the drain pipe 9 of the cooling unit 1 into the grommet mounting hole 6 of the dash panel 3 from the passenger compartment side, and
And the grommet 11 is fitted into the grommet mounting hole 6. As a result, the drain hose 10 is connected to the dash panel 3
To the dash silencer 5
Close the hole 7 and slot 8 closely. Then, the cooling unit 1 is fixed to a predetermined position in the vehicle cabin by fastening means (not shown) such as bolts.

The condensed water generated by the evaporator in the cooling unit 1 is sent to the engine room through the drain hose 10 and discharged to the outside. By arranging the drain hose 10 in the long hole 8 of the dash silencer 5,
The cooling unit 1 can be arranged near the dash panel 3, so that space can be saved. Since the hole 7 and the long hole 8 of the dash silencer 5 are closed and securely sealed by the seal plate 12 of the drain hose 10, noise transmitted through these holes 7 and the long hole 8 can be reduced, and The quietness of the room can be improved. The seal plate 12 is a straight pipe part 10 of the drain hose 10.
C and 10D, the seal plate 12 can be stably supported. In addition, by integrally forming the grommet 11 and the seal plate 12 with the drain hose 10, the number of assembling steps for these can be reduced.

As a modification of the above embodiment, FIG.
By extending the rectangular portion of the seal plate and inserting and projecting the end of the drain hose 10 to completely seal the slot 8 with the seal plate 12 as shown in FIG. You can also.

[0014]

As described above in detail, according to the drain hose structure of the vehicle air conditioner according to the first aspect of the present invention, the drain hose and the grommet are housed in the holes and the long holes of the dash silencer. The cooling unit can be arranged in the vicinity of the dash panel without protruding into the vehicle interior, so that space can be saved.
Further, by closing the holes and the long holes of the dash silencer with the seal plate attached to the drain hose, noise transmitted through these holes can be cut off, and the quietness in the vehicle interior can be improved. According to the drain hose structure of the vehicle air conditioner according to claim 2, since the drain port of the cooling unit is directed toward the end of the long hole of the dash silencer, the end of the drain hose protruding from the long hole. , The cooling unit can be arranged near the dash panel. Claim 3
According to the drain hose structure of the vehicle air conditioner according to the invention, the seal plate is fixed to the straight pipe portion of the drain hose, so that the seal plate can be stably supported by the straight pipe portion. Further, according to the drain hose structure of the vehicle air conditioner according to the fourth aspect of the present invention, since the grommet and the seal plate are integrally formed with the drain hose, the number of assembling steps for these can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a schematic configuration of a drain hose structure of a vehicle air conditioner according to an embodiment of the present invention.

FIG. 2 is an assembly diagram showing a schematic configuration of a drain hose structure of the vehicle air conditioner shown in FIG.

FIG. 3 is a vertical sectional view of a drain hose structure of the vehicle air conditioner shown in FIG.

FIG. 4 is a side view showing a partly broken drain hose of a drain hose structure of the vehicle air conditioner shown in FIG.

FIG. 5 is a rear view of the drain hose shown in FIG.

FIG. 6 is an assembly diagram showing a schematic configuration of a drain hose structure showing a modification of the embodiment shown in FIG. 1;

FIG. 7 is a longitudinal sectional view of a drain hose structure of a conventional vehicle air conditioner.

[Explanation of symbols]

 1 Cooling unit 3 Dash panel 5 Dash silencer 7 hole 8 Slot 8 Drain pipe (Drain port) 10 Drain hose 10A Connection 10B, 10E Curved pipe 10C, 10D Straight pipe 10F Penetration 11 Grommet 12 Seal plate

Claims (4)

[Claims] 1. A drain hose for a vehicle air conditioner, wherein a drain hose is connected to a cooling unit disposed in a vehicle compartment, and the drain hose is inserted through a dash panel through a grommet to be opened on an engine room side. In the structure, a long hole for accommodating the drain hose and a hole for accommodating the grommet are provided in a dash silencer stuck to the cabin side of the dash panel, and a seal plate covering the hole and the long hole is provided in the drain hose. An air conditioner for a vehicle, wherein the drain hose is routed along the elongated hole, and the seal plate is brought into close contact with the dash silencer so as to close the hole and the elongated hole. Drain hose structure. 2. The vehicular air conditioner according to claim 1, wherein a drain port for connecting the drain hose of the cooling unit is directed toward an end of the elongated hole. Drain hose structure. 3. The drain hose has a connecting portion connected to a drain port, a straight pipe portion extending downward along the dash panel from the connecting portion via a curved pipe portion, and a bent portion from the straight pipe portion. A penetrating part extending toward the engine room through a pipe part and penetrating the dash panel through the grommet, wherein the seal plate is fixed to the straight pipe part. 3. The drain hose structure of the vehicle air conditioner according to 1 or 2. 4. The drain hose structure according to claim 1, wherein the grommet and the seal plate are formed integrally with the drain hose.